3. B.J Penn UFC 94
Penn was looking to became the 1st fighter to simultaneously hold titles in 2 weight divisions when he fought GSP for the welterweight title at UFC 94. The two had met earlier in their careers at UFC 58, where Georges earned a split-decision victory.
This fight would not be nearly as close however, as GSP dominated Penn for 4 rounds until BJ’s corner stopped the fight.
This was the famous “vaseline-gate” fight, where GSP’s corner was caught rubbing vaseline on his back. Penn would file an appeal that was ultimately rejected.